PrimeFactors::setNumber() - Code Metrics - Inspection of "Add PrimeFactors classes." - drupol/phpermutations - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 0b4795...d0bddc )

by Pol

created 2017-01-08 16:57 UTC

PrimeFactors::setNumber() A

↳ Parent: PrimeFactors

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	4
ccs	4
cts	4
cp	1
rs	10
cc	1
eloc	3
nc	1
nop	1
crap	1

<?php

namespace drupol\phpermutations\Iterators;

use drupol\phpermutations\Combinatorics;

/**
 * Class PrimeFactors.
 *
 * @package drupol\phpermutations\Iterators
 */
class PrimeFactors extends Combinatorics implements \Iterator, \Countable {

  /**
   * The number.
   *
   * @var int
   */
  protected $number;

  /**
   * The key.
   *
   * @var int
   */
  protected $key;

  /**
   * The prime factors.
   *
   * @var int[]
   */
  protected $factors;

  /**
   * {@inheritdoc}
   */
  public function current() {
    return current($this->factors);
  }

  /**
   * {@inheritdoc}
   */
  public function next() {
    $this->key++;
    next($this->factors);
  }

  /**
   * {@inheritdoc}
   */
  public function key() {
    return $this->key;
  }

  /**
   * {@inheritdoc}
   */
  public function valid() {
    return isset($this->factors[$this->key()]);
  }

  /**
   * {@inheritdoc}
   */
  public function rewind() {
    $this->key = 0;
  }

  /**
   * Count elements of an object.
   *
   * @return int
   *   The number of element.
   */
  public function count() {
    return count($this->factors);
  }

  /**
   * Convert the iterator into an array.
   *
   * @return array
   *   The elements.
   */
  public function toArray() {
    $data = array();

    for ($this->rewind(); $this->valid(); $this->next()) {
      $data[] = $this->current();
    }

    return $data;
  }

  /**
   * Set the number.
   *
   * @param int $number
   *   The number.
   */
  public function setNumber($number) {
    $this->number = $number;
    $this->factors = $this->getFactors($this->getNumber());
  }

  /**
   * Get the number.
   *
   * @return int
   *   The number.
   */
  public function getNumber() {
    return intval($this->number);
  }

  /**
   * Compute the prime factors of the number.
   *
   * @return int[]
   *   The factors.
   */
  private function getFactors($number) {
    if ($number <= 0) {
      $factors = array();
    }

    for ($i = 2; $i <= $number / $i; $i++) {

      while ($number % $i == 0) {
        $factors[] = $i;
        $number /= $i;
      }
    }

    if ($number > 1) {
      $factors[] = $number;
    }

    return $factors;
  }

}


1			<?php
2
3			namespace drupol\phpermutations\Iterators;
4
5			use drupol\phpermutations\Combinatorics;
6
7			/**
8			* Class PrimeFactors.
9			*
10			* @package drupol\phpermutations\Iterators
11			*/
12			class PrimeFactors extends Combinatorics implements \Iterator, \Countable {
13
14			/**
15			* The number.
16			*
17			* @var int
18			*/
19			protected $number;
20
21			/**
22			* The key.
23			*
24			* @var int
25			*/
26			protected $key;
27
28			/**
29			* The prime factors.
30			*
31			* @var int[]
32			*/
33			protected $factors;
34
35			/**
36			* {@inheritdoc}
37			*/
38	2		public function current() {
39	2		return current($this->factors);
40			}
41
42			/**
43			* {@inheritdoc}
44			*/
45	2		public function next() {
46	2		$this->key++;
47	2		next($this->factors);
48	2		}
49
50			/**
51			* {@inheritdoc}
52			*/
53	2		public function key() {
54	2		return $this->key;
55			}
56
57			/**
58			* {@inheritdoc}
59			*/
60	2		public function valid() {
61	2		return isset($this->factors[$this->key()]);
62			}
63
64			/**
65			* {@inheritdoc}
66			*/
67	2		public function rewind() {
68	2		$this->key = 0;
69	2		}
70
71			/**
72			* Count elements of an object.
73			*
74			* @return int
75			* The number of element.
76			*/
77	2		public function count() {
78	2		return count($this->factors);
79			}
80
81			/**
82			* Convert the iterator into an array.
83			*
84			* @return array
85			* The elements.
86			*/
87	2		public function toArray() {
88	2		$data = array();
89
90	2		for ($this->rewind(); $this->valid(); $this->next()) {
91	2		$data[] = $this->current();
92	2		}
93
94	2		return $data;
95			}
96
97			/**
98			* Set the number.
99			*
100			* @param int $number
101			* The number.
102			*/
103	2		public function setNumber($number) {
104	2		$this->number = $number;
105	2		$this->factors = $this->getFactors($this->getNumber());
106	2		}
107
108			/**
109			* Get the number.
110			*
111			* @return int
112			* The number.
113			*/
114	2		public function getNumber() {
115	2		return intval($this->number);
116			}
117
118			/**
119			* Compute the prime factors of the number.
120			*
121			* @return int[]
122			* The factors.
123			*/
124	2		private function getFactors($number) {
125	2		if ($number <= 0) {
126			$factors = array();
127			}
128
129	2	View Code Duplication	for ($i = 2; $i <= $number / $i; $i++) {
			0 ignored issues – show Duplication introduced 2017-01-08 16:59 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
130	2		while ($number % $i == 0) {
131	2		$factors[] = $i;
132	2		$number /= $i;
133	2		}
134	2		}
135
136	2		if ($number > 1) {
137	2		$factors[] = $number;
138	2		}
139
140	2		return $factors;
141			}
142
143			}
144

drupol / phpermutations

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PrimeFactors::setNumber() A

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